Articles tagged with work

  1. Development of an emission model

    Notebook
  2. SONORUS meeting in Naples

    Two weeks ago there was a SONORUS meeting and school in Naples and Sorrento, Italy. The topic of the school was 'Computational Soundscape Analysis'. The next meeting will be in October in Gothenburg, Sweden.

  3. Paper at Euronoise

    The timetable for Euronoise 2015 is available. I will present the paper Determining an Empirical Emission Model for the Auralization of Jet Aircraft on Tuesday the second at nine in the morning.

    Update

    Seems like my presentation is moved to 10:20.

  4. Auralization: Doppler effect

    Notebook
  5. Research visit to Chalmers

    After the ASA meeting in Indianapolis I went to Gothenburg again for a research visit. As I wrote in my previous post it was strange to be there again. Last spring I visited Gothenburg for just a couple of days, but now, staying for seven weeks again is quite different. You start noticing quite a lot of things have changed. Many people I knew there have moved away and I also noticed a couple of restaurants I visited have closed since. Despite those things it was nice meeting old friends again.

    So, as I wrote in the title I went there on a research visit. The main reason for my visit was to attend some courses at Chalmers but to also work on my research. Initially the idea was to investigate further the model we're developing to deal with atmospheric turbulence in aircraft auralisations. However, in the end the courses took more time then I expected, so I didn't really get to work on the turbulence model anymore. However, I did manage to implement one nice part of the auralisation tool, namely support for Ambisonics.

    Besides Chalmers I also visited SP in Borås. SP was a familar place for me as well since I did an internship there in 2010. Earlier I had made recordings with a SoundField microphone, however, at Empa we do not have an Ambisonics setup. SP has a listening room with a third order Ambisonics system, giving me the possibility to listen to the first order recording as well as to higher order auralisations.

    One visit I met up with Peter Lundén who installed the system. After some problem solving we managed to get both the recordings and auralisations working. Unfortunately there was one problem with the auralisations, somehow halfway the aircraft makes a U-turn. While I haven't checked it any further, I think it is due to the inclusion of the Condon-Shortley phase in the function I used to calculate the spherical harmonics.

  6. Forum Acusticum 2014, Krakow

    Last week the conference Forum Acusticum 2014 took place in the city of Krakow, Poland. From Monday till Friday there were presentations as well as meetings of technical committees. The presentations covered a wide range of topics like structural acoustics, human response and auralisation.

    A special session was organised on Urban Sound Planning as well, in which many of my project members presented their current work. I'm glad a lot of people attended the session.

    I gave a presentation with the title Modelling sound propagation in the presence of turbulence for the auralisation of aircraft noise in a session on Environmental Acoustics. This session was Friday morning early, which was a bit unfortunate, considering there was a nice party with the Young Acousticians Network the evening before. I was surprised there were still so many people that morning!

    On Thursday I joined a discussion on benchmarking for computational acoustics. When implementing a model you would like to be able to validate this. This can sometimes be difficult due to lack of available information or benchmarks. Therefore, the idea is now to put online some kind of repository where people can put their benchmarks. Considering this is a topic of interest in other fields of science I am really curious how they deal with this.

    The city of Krakow surprised me a lot. It's quite a green city and there seems to be a good and relaxed mood. There's plenty of pubs and restaurants, especially around the main square which is huge.

    Anyway, that's my summary on FA2014!

  7. Summer in Norway

    Many that know me are aware of the fact that I am spending this summer in Oslo, Norway. In May I was offered a position for the summer at the Noise & Vibration section at Det Norske Veritas in Høvik. Thus far I am quite content with the work. I've been traveling a lot across Norway for noise and vibration measurements (DNV Comfort Class) and I've started working on noise and vibration predictions.

    Oslo seems to be a nice city as well. Especially the location where I live; everything is basically around the corner. Commuting time is acceptable and nature can be reached in about half an hour. Unfortunately I haven't really been able to see much of the nature outside Oslo due to the bad weather and a bad fever last week.

    The coming week I am having off from work, and what way to spend it better than to go hiking! Monday I will take the bus/train to Liomseter from where I will hike for five days along the final part of Jotunheimstien. Last week I bought all the gear (ouch, Gore-Tex is expensive!!) I think I will need for this and future trips. What future trips, you might ask. Well, at least end of next month I intend to walk the Kungsleden in Sweden.

    Anyhow, summer thus far has been quite nice with visiting The Netherlands again, as well as attending Hultsfredsfestivalen in Sweden. And with the forecast of the hiking trips it only seems to become better :-)

    To end this post I have here a nice recording of the Norwegian band Katzenjammer, who were playing at Hultsfredsfestivalen as well, though this is a recording from elsewhere.

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